This statement without a specific error code (only index) leads to KeyError Exception in 258 line, when attempt to get error code with zero key mapping in the linux ubuntu system (or others)..

Mikhail Kaplenko · Mikhail Kaplenko · commit 6091e406f916 · 2016-01-28T16:37:22.000+03:00
diff --git a/tarantool/connection.py b/tarantool/connection.py
@@ -241,7 +241,7 @@ def check():  # Check that connection is alive
             return
 
         attempt = 0
-        last_errno = 0
+        last_errno = errno.ECONNRESET
         while True:
             time.sleep(self.reconnect_delay)
             try:
